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CN-224208558-U - Vibration screening hopper with fineness modulus and sand yield adjusted

CN224208558UCN 224208558 UCN224208558 UCN 224208558UCN-224208558-U

Abstract

The utility model relates to the technical field of vibratory screening hoppers, in particular to a vibratory screening hopper with fineness modulus and sand yield adjusted. The vibrating screening hopper comprises a vibrating screen assembly and a discharging assembly, wherein the vibrating screen assembly comprises a vibrating part and a screen assembly, the screen assembly is connected with the vibrating part, the screen assembly comprises an upper screen, a middle screen and a lower screen, the discharging assembly comprises a first chute, a second chute, a third chute and a discharging hopper, a feeding port of the first chute is communicated with a discharging end of the upper screen, a feeding port of the second chute is communicated with a discharging end of the middle screen, a feeding port of the third chute is communicated with a discharging end of the lower screen, and the discharging hopper is arranged below the lower screen. The utility model can solve the problem that the existing vibration screening equipment has poor granularity precision control in the aspect of adjusting fineness modulus and has limited adjusting capability in the aspect of adjusting sand yield of a sand production line, thereby causing insufficient sand yield.

Inventors

  • WANG SHUGUO
  • WANG DONGYANG
  • SUN CHUNQING
  • YAN HESHUN
  • WANG XU
  • WANG CHEN
  • WU RONGRONG

Assignees

  • 中国铁建重工集团股份有限公司

Dates

Publication Date
20260508
Application Date
20250513

Claims (7)

  1. 1. The vibrating screening hopper with the fineness modulus and the sand yield adjusted is characterized by comprising a vibrating screen assembly and a discharging assembly; The vibrating screen assembly comprises a vibrating component and a screen assembly, wherein the screen assembly is connected with the vibrating component and comprises an upper screen (1), a middle screen (2) and a lower screen (3) which are arranged obliquely at intervals from top to bottom in sequence and the screen pore diameters of which are reduced in sequence; The discharging assembly comprises a first chute (4), a second chute (5), a third chute (6) and a discharging hopper (7), wherein a feeding port of the first chute (4) is communicated with a discharging end of the upper screen (1) and is used for outputting first finished products, a feeding port of the second chute (5) is communicated with a discharging end of the middle screen (2) and is used for outputting second finished products, a feeding port of the third chute (6) is communicated with a discharging end of the lower screen (3) and is used for outputting third finished products, and the discharging hopper (7) is arranged below the lower screen (3) and is used for collecting fourth finished products sieved by the lower screen (3) and is output through a discharging port of the fourth finished products.
  2. 2. The vibration screening hopper with fineness modulus and sand yield adjustment according to claim 1, characterized in that the second chute (5) comprises a first main chute (5.1) and a first branch chute (5.2), the first branch chute (5.2) is communicated with the first chute (4), a first on-off assembly (8) is arranged in the first main chute (5.1), the first on-off assembly (8) comprises a first plugboard (8.1) and a first driving assembly, the first plugboard (8.1) is arranged in the first main chute (5.1) in a movable inserting manner along the cross section of the first main chute (5.1), one end of the first plugboard (8.1) located outside the first main chute (5.1) is connected with the first driving assembly, and the first driving assembly is used for linking the first plugboard (8.1) to realize the first main chute (5.1).
  3. 3. The vibration screening hopper with fineness modulus and sand yield adjustment according to claim 2, characterized in that the first driving assembly comprises a first driving piece (8.4), a first screw rod (8.2) and a first thread bush (8.3), wherein the first thread bush (8.3) is coaxially arranged on the first screw rod (8.2) and is connected with the first inserting plate (8.1), and the output end of the first driving piece (8.4) is connected with one end of the first screw rod (8.2) far away from the first inserting plate (8.1).
  4. 4. The vibration screening hopper with fineness modulus and sand yield adjustment according to claim 1, characterized in that the third chute (6) comprises a second main chute (6.1) and a second branch chute (6.2), the second branch chute (6.2) is communicated with the second chute (5), a second breaking assembly (9) is arranged in the second branch chute (6.2), the second breaking assembly (9) comprises a second inserting plate and a second driving assembly, the second inserting plate is arranged in the second branch chute (6.2) in a movable inserting manner along the cross section of the second branch chute (6.2), one end of the second inserting plate, which is positioned outside the second branch chute (6.2), is connected with the second driving assembly, and the second driving assembly is used for linking the second inserting plate to realize the on-off of the second branch chute (6.2).
  5. 5. The vibratory screening hopper with adjustable fineness modulus and sand yield according to claim 4, wherein the second driving assembly comprises a second driving piece, a second screw rod and a second threaded sleeve, wherein the second threaded sleeve is coaxially arranged on the second screw rod and is connected with the second inserting plate, and the output end of the second driving piece is connected with one end of the second screw rod far away from the second inserting plate.
  6. 6. The vibration screening hopper with the fineness modulus and the sand yield adjusted according to any one of claims 1 to 5, further comprising a return belt (10), a sand making machine (11) and a discharge belt (12), wherein one end of the return belt (10) is a feeding end and is connected with a discharge port of the first chute (4) or a discharge port of the second chute (5), the other end of the return belt (10) is a discharge end and is connected with a feed port of the sand making machine (11), one end of the discharge belt (12) is a feeding end and is connected with a discharge port of the sand making machine (11), and the other end of the discharge belt (12) is a discharge end and is connected with a feed end of the upper screen (1).
  7. 7. The vibratory screening hopper of claim 6, wherein the vibratory screen assembly further comprises a support frame connected to the upper screen (1), the middle screen (2) and the lower screen (3).

Description

Vibration screening hopper with fineness modulus and sand yield adjusted Technical Field The utility model relates to the technical field of vibratory screening hoppers, in particular to a vibratory screening hopper with fineness modulus and sand yield adjusted. Background The fineness modulus of the sand is an important index for evaluating the thickness degree of the sand, and has important significance for quality control of concrete and mortar. The larger the fineness modulus, the coarser the sand, and conversely, the finer the sand. In concrete engineering, the fineness modulus of sand directly affects the strength, durability and workability of concrete. In particular, when the fineness modulus of the sand is between 2.3 and 3.0, the distribution of the sand diameter in the range is more uniform, which is beneficial to improving the quality and performance of the asphalt concrete. In the sand making process, the fineness modulus of the sand is directly influenced by the content of 3-5 mm of the finished sand, so that the fineness modulus of the sand can be controlled by controlling the content of 3-5 mm of the finished sand. The conditioning capacity of a sand production line may be affected by a number of factors such as equipment parameters, process flows and raw material supply, such that the conditioning capacity is limited resulting in insufficient sand production. For example, when the process of the sand production line is determined, the proportion of the finished sand material with a specific particle size range in the sand yield cannot be adjusted, that is, the adjusting capability is limited, so that the yield of the finished sand material with a corresponding proportion is insufficient. The vibration screening device is widely applied to the fields of building materials, mines, chemical industry, metallurgy and the like and is used for screening and classifying various particle materials. However, the conventional vibration screening device has certain limitation in terms of fineness modulus adjustment, particularly, when materials with complex particle size distribution are processed, the requirement for precisely controlling the particle size of the materials is difficult to meet, and the conventional vibration screening device has the problem that the adjustment capability is limited in terms of sand yield adjustment of a sand production line, so that the sand yield is insufficient. In view of the above, it is necessary to develop a vibrating screening hopper with fineness modulus and sand yield adjustment to solve the problem that the existing vibrating screening device has poor granularity precision control in adjusting fineness modulus and has limited adjustment capability in adjusting sand yield of sand production line, which results in insufficient sand yield. Disclosure of utility model The utility model aims to provide a vibrating screening hopper with fineness modulus and sand yield adjusted, which has the following specific technical scheme: A vibrating screening hopper with fineness modulus and sand yield adjusted comprises a vibrating screen assembly and a discharging assembly; the vibrating screen assembly comprises a vibrating component and a screen assembly, wherein the screen assembly is connected with the vibrating component and comprises an upper screen, a middle screen and a lower screen which are arranged obliquely at intervals from top to bottom in sequence and the pore diameters of the screens are reduced in sequence; The discharging assembly comprises a first chute, a second chute, a third chute and a discharging hopper, wherein a feeding hole of the first chute is communicated with a discharging end of the upper screen, a discharging hole of the first chute is used for outputting first finished products, a feeding hole of the second chute is communicated with a discharging end of the middle screen, a discharging hole of the second chute is used for outputting second finished products, a feeding hole of the third chute is communicated with a discharging end of the lower screen, a discharging hole of the third chute is used for outputting third finished products, and the discharging hopper is arranged below the lower screen, is used for collecting fourth finished products falling down by the lower screen and is output through the discharging hole of the fourth finished products. Optionally, the second chute comprises a first main path chute and a first branch path chute; the first branch chute is communicated with the first chute, a first on-off assembly is arranged in the first main chute and comprises a first inserting plate and a first driving assembly, the first inserting plate is movably inserted into the first main chute along the cross section of the first main chute, one end of the first inserting plate, which is positioned outside the first main chute, is connected with the first driving assembly, and the first driving assembly is used for linking the first